Siemens 3RT7025-1AG00 Contactor AC-3, 18A, 7.5kW, 36V AC Coil, Screw Terminals, Size S0 Original Brand New

Overview

The Siemens 3RT7025-1AG00 is a robust and highly efficient power contactor designed for reliable switching of electrical loads, particularly three-phase motors. As part of the SIRIUS 3RT product family, this contactor is engineered for superior performance and longevity in industrial applications. It is rated for AC-3 duty, making it ideal for standard motor control, and is capable of handling a current of 18A and a power output of up to 7.5kW at 400V. The compact size S0 design makes it suitable for space-constrained installations, while the integrated screw terminals ensure a secure and straightforward wiring process.

Benefit

• High Reliability: Built with high-quality materials and Siemens’ renowned engineering, this contactor offers a long electrical and mechanical lifespan, reducing maintenance and downtime.
• Energy Efficiency: The efficient design minimizes power consumption during operation, leading to cost savings over time.
• Space-Saving Design: The compact size S0 form factor allows for higher component density within control cabinets, optimizing panel space.
• Easy Installation: Screw terminals provide a simple and reliable connection, speeding up the installation and commissioning process.
• Versatile Application: Suitable for a wide range of applications, including motor control, lighting systems, and other resistive loads.

Function

The Siemens 3RT7025-1AG00 functions as an electromagnetically operated switch. When the 36V AC control voltage is applied to the coil (A1-A2), a magnetic field is generated, pulling the main contacts closed. This allows power to flow to the connected load. When the control voltage is removed, the magnetic field collapses, and a spring forces the contacts to open, interrupting the power flow. The contactor’s AC-3 rating indicates its suitability for frequently switching asynchronous squirrel-cage motors, which require high breaking capacity during motor start-up.

Technical Specification

• Product Type: Power Contactor
• Product Number: 3RT7025-1AG00
• Manufacturer: Siemens
• Series: SIRIUS 3RT
• Rated Operating Current (AC-3): 18A
• Rated Power (AC-3): 7.5 kW at 400V
• Coil Control Voltage: 36V AC, 50Hz
• Size: S0
• Terminal Type: Screw Terminals
• Number of Poles: 3-pole
• Auxiliary Contacts: None (W/O Auxiliary Contacts)
• Mounting: DIN rail mountable

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